SYDNEY, Dec. 30 (Xinhua) -- The defending champions Switzerland and the runners-up Germany are a step closer to book their final rematch as both of them triumphed 3-0 in their respective debut against Britain and Spain at the Hopman Cup in Perth, Australia on Sunday.
Veteran Roger Federer claimed a commanding 6-1, 6-1 victory over 23-year-old Cameron Norrie to earn Switzerland a first point.
"I'm happy in all aspects of my game that things were working -- foot work, offensive play, serve, return -- it was all there. It was a great match for me," said Federer, who added a 20th Grand Slam trophy to his collection at the Australian Open in January this year.
Belinda Bencic stormed seven points in the tie-break of the second set to outclass Katie Boulter 6-2, 7-6. The Swiss pair combined for another 4-3, 4-1 win to claim a 3-0 sweep over the Brits in Group B.
Switzerland will play the United States on the New Year's Day, when Federer will play against Serene Williams in the mixed doubles.
In a Group A clash earlier, world no. 2 Angelique Kerber beat Garbine Muguruza 6-2, 3-6, 6-3 to put Germany ahead, while snapping her five-match losing streak against the two-time Grand Slam winner.
ATP finals champion Alexander Zverev fended off David Ferrer 6-4, 4-6, 7-6 to seal the victory for Germany. Another 4-2, 4-3 victory in the dead rubber mixed doubles enabled the Germans to beat the Spaniards 3-0 in their opening tie at the tournament.
"Of course, it is just the beginning and I am quite happy with how I played," Kerber said. "There are a few matches to come here. So far I have won everything, so it is not so bad."
The Germans could enjoy a New Year celebration first before their next match-up against France, who lost to hosts Australia 2-1 on the opening day.
The Hopman Cup is an annual mixed competition named in honor of Australian tennis legend Harry Hopman. This year's Hopman Cup, the 30th edition of the tournament, is ongoing from December 29 to January 5.